1// -*- C++ -*- 2//===----------------------------------------------------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef _LIBCPP_STRSTREAM 11#define _LIBCPP_STRSTREAM 12 13/* 14 strstream synopsis 15 16class strstreambuf // Removed in C++26 17 : public basic_streambuf<char> 18{ 19public: 20 explicit strstreambuf(streamsize alsize_arg = 0); // before C++20 21 strstreambuf() : strstreambuf(0) {} // C++20 22 explicit strstreambuf(streamsize alsize_arg); // C++20 23 24 strstreambuf(void* (*palloc_arg)(size_t), void (*pfree_arg)(void*)); 25 strstreambuf(char* gnext_arg, streamsize n, char* pbeg_arg = nullptr); 26 strstreambuf(const char* gnext_arg, streamsize n); 27 28 strstreambuf(signed char* gnext_arg, streamsize n, signed char* pbeg_arg = nullptr); 29 strstreambuf(const signed char* gnext_arg, streamsize n); 30 strstreambuf(unsigned char* gnext_arg, streamsize n, unsigned char* pbeg_arg = nullptr); 31 strstreambuf(const unsigned char* gnext_arg, streamsize n); 32 33 strstreambuf(strstreambuf&& rhs); 34 strstreambuf& operator=(strstreambuf&& rhs); 35 36 virtual ~strstreambuf(); 37 38 void swap(strstreambuf& rhs); 39 40 void freeze(bool freezefl = true); 41 char* str(); 42 int pcount() const; 43 44protected: 45 virtual int_type overflow (int_type c = EOF); 46 virtual int_type pbackfail(int_type c = EOF); 47 virtual int_type underflow(); 48 virtual pos_type seekoff(off_type off, ios_base::seekdir way, 49 ios_base::openmode which = ios_base::in | ios_base::out); 50 virtual pos_type seekpos(pos_type sp, 51 ios_base::openmode which = ios_base::in | ios_base::out); 52 virtual streambuf* setbuf(char* s, streamsize n); 53 54private: 55 typedef T1 strstate; // exposition only 56 static const strstate allocated; // exposition only 57 static const strstate constant; // exposition only 58 static const strstate dynamic; // exposition only 59 static const strstate frozen; // exposition only 60 strstate strmode; // exposition only 61 streamsize alsize; // exposition only 62 void* (*palloc)(size_t); // exposition only 63 void (*pfree)(void*); // exposition only 64}; 65 66class istrstream // Removed in C++26 67 : public basic_istream<char> 68{ 69public: 70 explicit istrstream(const char* s); 71 explicit istrstream(char* s); 72 istrstream(const char* s, streamsize n); 73 istrstream(char* s, streamsize n); 74 75 virtual ~istrstream(); 76 77 strstreambuf* rdbuf() const; 78 char *str(); 79 80private: 81 strstreambuf sb; // exposition only 82}; 83 84class ostrstream // Removed in C++26 85 : public basic_ostream<char> 86{ 87public: 88 ostrstream(); 89 ostrstream(char* s, int n, ios_base::openmode mode = ios_base::out); 90 91 virtual ~ostrstream(); 92 93 strstreambuf* rdbuf() const; 94 void freeze(bool freezefl = true); 95 char* str(); 96 int pcount() const; 97 98private: 99 strstreambuf sb; // exposition only 100}; 101 102class strstream // Removed in C++26 103 : public basic_iostream<char> 104{ 105public: 106 // Types 107 typedef char char_type; 108 typedef char_traits<char>::int_type int_type; 109 typedef char_traits<char>::pos_type pos_type; 110 typedef char_traits<char>::off_type off_type; 111 112 // constructors/destructor 113 strstream(); 114 strstream(char* s, int n, ios_base::openmode mode = ios_base::in | ios_base::out); 115 116 virtual ~strstream(); 117 118 // Members: 119 strstreambuf* rdbuf() const; 120 void freeze(bool freezefl = true); 121 int pcount() const; 122 char* str(); 123 124private: 125 strstreambuf sb; // exposition only 126}; 127 128} // std 129 130*/ 131 132#include <__config> 133#include <istream> 134#include <ostream> 135#include <version> 136 137#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 138# pragma GCC system_header 139#endif 140 141#if _LIBCPP_STD_VER < 26 || defined(_LIBCPP_ENABLE_CXX26_REMOVED_STRSTREAM) || defined(_LIBCPP_BUILDING_LIBRARY) 142 143_LIBCPP_PUSH_MACROS 144# include <__undef_macros> 145 146_LIBCPP_BEGIN_NAMESPACE_STD 147 148class _LIBCPP_DEPRECATED _LIBCPP_EXPORTED_FROM_ABI strstreambuf : public streambuf { 149public: 150# ifndef _LIBCPP_CXX03_LANG 151 _LIBCPP_HIDE_FROM_ABI strstreambuf() : strstreambuf(0) {} 152 explicit strstreambuf(streamsize __alsize); 153# else 154 explicit strstreambuf(streamsize __alsize = 0); 155# endif 156 strstreambuf(void* (*__palloc)(size_t), void (*__pfree)(void*)); 157 strstreambuf(char* __gnext, streamsize __n, char* __pbeg = nullptr); 158 strstreambuf(const char* __gnext, streamsize __n); 159 160 strstreambuf(signed char* __gnext, streamsize __n, signed char* __pbeg = nullptr); 161 strstreambuf(const signed char* __gnext, streamsize __n); 162 strstreambuf(unsigned char* __gnext, streamsize __n, unsigned char* __pbeg = nullptr); 163 strstreambuf(const unsigned char* __gnext, streamsize __n); 164 165# ifndef _LIBCPP_CXX03_LANG 166 _LIBCPP_HIDE_FROM_ABI strstreambuf(strstreambuf&& __rhs); 167 _LIBCPP_HIDE_FROM_ABI strstreambuf& operator=(strstreambuf&& __rhs); 168# endif // _LIBCPP_CXX03_LANG 169 170 ~strstreambuf() override; 171 172 void swap(strstreambuf& __rhs); 173 174 void freeze(bool __freezefl = true); 175 char* str(); 176 int pcount() const; 177 178protected: 179 int_type overflow(int_type __c = EOF) override; 180 int_type pbackfail(int_type __c = EOF) override; 181 int_type underflow() override; 182 pos_type 183 seekoff(off_type __off, ios_base::seekdir __way, ios_base::openmode __which = ios_base::in | ios_base::out) override; 184 pos_type seekpos(pos_type __sp, ios_base::openmode __which = ios_base::in | ios_base::out) override; 185 186private: 187 typedef unsigned __mode_type; 188 static const __mode_type __allocated = 0x01; 189 static const __mode_type __constant = 0x02; 190 static const __mode_type __dynamic = 0x04; 191 static const __mode_type __frozen = 0x08; 192 static const streamsize __default_alsize = 4096; 193 194 __mode_type __strmode_; 195 streamsize __alsize_; 196 void* (*__palloc_)(size_t); 197 void (*__pfree_)(void*); 198 199 void __init(char* __gnext, streamsize __n, char* __pbeg); 200}; 201 202# ifndef _LIBCPP_CXX03_LANG 203 204inline _LIBCPP_HIDE_FROM_ABI strstreambuf::strstreambuf(strstreambuf&& __rhs) 205 : streambuf(__rhs), 206 __strmode_(__rhs.__strmode_), 207 __alsize_(__rhs.__alsize_), 208 __palloc_(__rhs.__palloc_), 209 __pfree_(__rhs.__pfree_) { 210 __rhs.setg(nullptr, nullptr, nullptr); 211 __rhs.setp(nullptr, nullptr); 212} 213 214inline _LIBCPP_HIDE_FROM_ABI strstreambuf& strstreambuf::operator=(strstreambuf&& __rhs) { 215 if (eback() && (__strmode_ & __allocated) != 0 && (__strmode_ & __frozen) == 0) { 216 if (__pfree_) 217 __pfree_(eback()); 218 else 219 delete[] eback(); 220 } 221 streambuf::operator=(__rhs); 222 __strmode_ = __rhs.__strmode_; 223 __alsize_ = __rhs.__alsize_; 224 __palloc_ = __rhs.__palloc_; 225 __pfree_ = __rhs.__pfree_; 226 __rhs.setg(nullptr, nullptr, nullptr); 227 __rhs.setp(nullptr, nullptr); 228 return *this; 229} 230 231# endif // _LIBCPP_CXX03_LANG 232 233class _LIBCPP_DEPRECATED _LIBCPP_EXPORTED_FROM_ABI istrstream : public istream { 234public: 235 _LIBCPP_HIDE_FROM_ABI explicit istrstream(const char* __s) : istream(&__sb_), __sb_(__s, 0) {} 236 _LIBCPP_HIDE_FROM_ABI explicit istrstream(char* __s) : istream(&__sb_), __sb_(__s, 0) {} 237 _LIBCPP_HIDE_FROM_ABI istrstream(const char* __s, streamsize __n) : istream(&__sb_), __sb_(__s, __n) {} 238 _LIBCPP_HIDE_FROM_ABI istrstream(char* __s, streamsize __n) : istream(&__sb_), __sb_(__s, __n) {} 239 240# ifndef _LIBCPP_CXX03_LANG 241 _LIBCPP_HIDE_FROM_ABI istrstream(istrstream&& __rhs) // extension 242 : istream(std::move(static_cast<istream&>(__rhs))), __sb_(std::move(__rhs.__sb_)) { 243 istream::set_rdbuf(&__sb_); 244 } 245 246 _LIBCPP_HIDE_FROM_ABI istrstream& operator=(istrstream&& __rhs) { 247 __sb_ = std::move(__rhs.__sb_); 248 istream::operator=(std::move(__rhs)); 249 return *this; 250 } 251# endif // _LIBCPP_CXX03_LANG 252 253 ~istrstream() override; 254 255 _LIBCPP_HIDE_FROM_ABI void swap(istrstream& __rhs) { 256 istream::swap(__rhs); 257 __sb_.swap(__rhs.__sb_); 258 } 259 260 _LIBCPP_HIDE_FROM_ABI strstreambuf* rdbuf() const { return const_cast<strstreambuf*>(&__sb_); } 261 _LIBCPP_HIDE_FROM_ABI char* str() { return __sb_.str(); } 262 263private: 264 strstreambuf __sb_; 265}; 266 267class _LIBCPP_DEPRECATED _LIBCPP_EXPORTED_FROM_ABI ostrstream : public ostream { 268public: 269 _LIBCPP_HIDE_FROM_ABI ostrstream() : ostream(&__sb_) {} 270 _LIBCPP_HIDE_FROM_ABI ostrstream(char* __s, int __n, ios_base::openmode __mode = ios_base::out) 271 : ostream(&__sb_), __sb_(__s, __n, __s + (__mode & ios::app ? std::strlen(__s) : 0)) {} 272 273# ifndef _LIBCPP_CXX03_LANG 274 _LIBCPP_HIDE_FROM_ABI ostrstream(ostrstream&& __rhs) // extension 275 : ostream(std::move(static_cast<ostream&>(__rhs))), __sb_(std::move(__rhs.__sb_)) { 276 ostream::set_rdbuf(&__sb_); 277 } 278 279 _LIBCPP_HIDE_FROM_ABI ostrstream& operator=(ostrstream&& __rhs) { 280 __sb_ = std::move(__rhs.__sb_); 281 ostream::operator=(std::move(__rhs)); 282 return *this; 283 } 284# endif // _LIBCPP_CXX03_LANG 285 286 ~ostrstream() override; 287 288 _LIBCPP_HIDE_FROM_ABI void swap(ostrstream& __rhs) { 289 ostream::swap(__rhs); 290 __sb_.swap(__rhs.__sb_); 291 } 292 293 _LIBCPP_HIDE_FROM_ABI strstreambuf* rdbuf() const { return const_cast<strstreambuf*>(&__sb_); } 294 _LIBCPP_HIDE_FROM_ABI void freeze(bool __freezefl = true) { __sb_.freeze(__freezefl); } 295 _LIBCPP_HIDE_FROM_ABI char* str() { return __sb_.str(); } 296 _LIBCPP_HIDE_FROM_ABI int pcount() const { return __sb_.pcount(); } 297 298private: 299 strstreambuf __sb_; // exposition only 300}; 301 302class _LIBCPP_DEPRECATED _LIBCPP_EXPORTED_FROM_ABI strstream : public iostream { 303public: 304 // Types 305 typedef char char_type; 306 typedef char_traits<char>::int_type int_type; 307 typedef char_traits<char>::pos_type pos_type; 308 typedef char_traits<char>::off_type off_type; 309 310 // constructors/destructor 311 _LIBCPP_HIDE_FROM_ABI strstream() : iostream(&__sb_) {} 312 _LIBCPP_HIDE_FROM_ABI strstream(char* __s, int __n, ios_base::openmode __mode = ios_base::in | ios_base::out) 313 : iostream(&__sb_), __sb_(__s, __n, __s + (__mode & ios::app ? std::strlen(__s) : 0)) {} 314 315# ifndef _LIBCPP_CXX03_LANG 316 _LIBCPP_HIDE_FROM_ABI strstream(strstream&& __rhs) // extension 317 : iostream(std::move(static_cast<iostream&>(__rhs))), __sb_(std::move(__rhs.__sb_)) { 318 iostream::set_rdbuf(&__sb_); 319 } 320 321 _LIBCPP_HIDE_FROM_ABI strstream& operator=(strstream&& __rhs) { 322 __sb_ = std::move(__rhs.__sb_); 323 iostream::operator=(std::move(__rhs)); 324 return *this; 325 } 326# endif // _LIBCPP_CXX03_LANG 327 328 ~strstream() override; 329 330 _LIBCPP_HIDE_FROM_ABI void swap(strstream& __rhs) { 331 iostream::swap(__rhs); 332 __sb_.swap(__rhs.__sb_); 333 } 334 335 // Members: 336 _LIBCPP_HIDE_FROM_ABI strstreambuf* rdbuf() const { return const_cast<strstreambuf*>(&__sb_); } 337 _LIBCPP_HIDE_FROM_ABI void freeze(bool __freezefl = true) { __sb_.freeze(__freezefl); } 338 _LIBCPP_HIDE_FROM_ABI int pcount() const { return __sb_.pcount(); } 339 _LIBCPP_HIDE_FROM_ABI char* str() { return __sb_.str(); } 340 341private: 342 strstreambuf __sb_; // exposition only 343}; 344 345_LIBCPP_END_NAMESPACE_STD 346 347_LIBCPP_POP_MACROS 348 349#endif // _LIBCPP_STD_VER < 26 || defined(_LIBCPP_ENABLE_CXX26_REMOVED_STRSTREAM) || defined(_LIBCPP_BUILDING_LIBRARY) 350 351#endif // _LIBCPP_STRSTREAM 352